Jawabanmu

2014-09-11T20:34:11+07:00
7log2 = a
log2/log7 = a
log2 = alog7

2log3 = b
log3/log2 = b
log3 = blog2 = ablog7

98log6 = log6/log98
             = log 2,3/log2,7kuadrat
             = log2 + log3
                 log2 + log7 + log7
             = alog7 + ablog7
                 alog7 + log7 + log7
             =  a + ab
                  a + 1 + 1
             = a + ab
                 a + 2
2014-09-11T20:37:54+07:00
2log6 : 2log98
= 2log(2.3) : 2log(2.47)
= (2log2 + 2log3) : (2log2 + 2log7²)
= (1 + b) : (1 + 2. 2log7)
= (1 + b) : (1 + 2. 1/a)
= (1 + b) : (1 + 2/a)
= (1 + b) : (a + 2) : a) <== hasil penjumlahan (1 + 2/a)
= ((1 + b) x a) : (a + 2)
= (a + ab) : (a + 2) <== hasil akhir